private float preyChangeInPopulationWithCarryingCapacity(InitialParameters initialparams, System.Collections.Hashtable lotkavolterravariables)
{
float a = initialparams.GrowthRate * (float)lotkavolterravariables["preypopulation"];
//float b = (float)lotkavolterravariables["preypopulation"] + (initialparams.DeathPropotionalityScore * (float)lotkavolterravariables["predatorpopulation"]);
float b = (float)lotkavolterravariables["preypopulation"] + (initialparams.AlphaNP * (float)lotkavolterravariables["predatorpopulation"]);
float c = b / initialparams.CarryingCapacity;
float d = 1 - c;
return(a * d);
}
private float growth(float populationSize, InitialParameters initialparams)
{
return(initialparams.GrowthRate * populationSize * initialparams.TimeIncrement);
}
private float deathrate(float populationSize, InitialParameters initialparams)
{
return(initialparams.GrowthRate * (1 - (populationSize / initialparams.CarryingCapacity)));
}
private float deaths(float populationSize, InitialParameters initialparams)
{
return(populationSize * initialparams.DeathPropotionalityScore);
}
private float births(float populationSize, InitialParameters initialparams)
{
return(populationSize * initialparams.BirthFraction);
}